NEXT-proaudio to launch Acoustical Simulation Tool at Prolight & Sound

The new Acoustical Simulation Tool (AST) software from NEXT-proaudio is an acoustic simulation software for 2D modelling of either single subwoofer sources or sub-arrays. 

With an extremely intuitive and easy to use interface, AST has been designed to help NEXT-proaudio users with setting up subwoofers enclosures into a venue. Based on a very fast and accurate algorithm, this tool is capable of predicting the acoustical performance of the subwoofers, helping the user to find the best solution for a given venue with multiple sound sources. The simulator allows the user to simulate in 11 different ISO 266 spacing frequencies (20Hz~200Hz), all with a single click.

NEXT-proaudio AST Acoustical Simulation Tool

AST includes NEXT-proaudio’s subwoofer model database, containing sensitivity data, maximum power ratings and subwoofer dimensions. After adding a sound source to the project, it can be easily modified by clicking on the top of each one. There are several different parameters that can be set. These include orientation and vertical stack (up to 4 units), as well as other electronic parameters such as polarity, delay and gain. The gain value can be calculated according to the feeding amplifier power. Based on humidity, temperature and altitude, the speed of sound is carefully calculated in order to achieve the most precise sound-wave phase calculation The resultant coverage simulation is mapped in a Jet-colour graphics with the SPL distribution throughout the venue.

With a listening point, known as a probe or “virtual microphone”, the user can easily predict the frequency and phase response in a desired location. AST provides up to 4 listening points simultaneously.

Polar plot is also available in this software tool. The user needs only to indicate how far the virtual measurement will be taken, and click to trace. The polar plot will be displayed in a separate window, with important information alongside, such as Q, DI and -6dB angle.

Long set up times, as well as calculation errors, can be a big problem when inserting subwoofer arrays. To avoid set up problems, AST provides a function called “Insert Array”, which ables the user to customise any array with just a few mouse clicks.

Setting up a subwoofer “Virtual Arc” can be a difficult and time consuming task. However, this is an easy job for AST users. Based on the acoustical beam aperture (0º~90º), a provided function called “Virtual Arc” does all the complex math calculations required, and presents the needed data (sub location and delay) to include in your DSP audio processor.

“Virtual Arc” is a very important and useful feature of AST because it automatically calculates the subwoofer delays to make a virtually arched array with the desired directivity pattern. This saves the user a lot of time when setting up a subwoofer array for a show.


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